/**
 ********************************************************************************
 * Copyright (c) 2020, 2021 Robert Bosch GmbH.
 * 
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * 
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     Robert Bosch GmbH - initial API and implementation
 ********************************************************************************
 */

package org.eclipse.app4mc.amlt2systemc.m2t;

import java.util.Map;

import org.eclipse.app4mc.amalthea.model.AmaltheaFactory;
import org.eclipse.app4mc.amalthea.model.io.AmaltheaLoader;
import org.eclipse.app4mc.amlt2systemc.m2t.module.PropertyKeys;
import org.eclipse.app4mc.transformation.ServiceConstants;
import org.eclipse.app4mc.transformation.executiontype.IModelToTextConfig;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.ConfigurationPolicy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Component(
		configurationPid = ServiceConstants.SESSION_CONFIGURATION_PID,
		configurationPolicy = ConfigurationPolicy.REQUIRE,
		property = { ServiceConstants.TRANSFORMATION_PROPERTY + "=APP4MCSIM" },
		service = IModelToTextConfig.class)
public class M2TTransformationConfig implements IModelToTextConfig {

	private static final Logger LOG = LoggerFactory.getLogger(M2TTransformationConfig.class);

	private String folderPath;

	@Activate
	void activate(Map<String, ?> properties) {
		folderPath = (String) properties.get(PropertyKeys.INPUT_MODELS_FOLDER);
	}

	public ResourceSet getInputResourceSet() {

		if (folderPath != null) {

			ResourceSet resourceSet = AmaltheaLoader.loadFromDirectoryNamed(folderPath);

			if (resourceSet.getResources().isEmpty()) {
				LOG.error(
						"No Amalthea model files are loaded. Verify if the model version is : {}",
						AmaltheaFactory.eINSTANCE.createAmalthea().getVersion());
			}

			return resourceSet;
		} else {
			LOG.error("Input_models_folder parameter not set",
					new NullPointerException("input_models_folder property not set"));
		}

		return null;
	}

}